TEMPERATURE BEHAVIOUR OF OPTICAL ABSORPTION EDGE AND PHASE TRANSITIONS IN Cu6PS5I0.8Cl0.2 SUPERIONIC MIXED CRYSTALS

被引：0
|
作者：
Studenyak, I. P. [1 ]
Izai, V. Yu. [1 ]
Panko, V. V. [2 ]
Orliukas, A. F. [2 ]
Kazakevicius, E. [2 ]
Koleli, F. [3 ]
Dudukcu, M. [3 ]
Aydin, R. [3 ]
机构：
[1] Uzhgorod Natl Univ, UA-88000 Uzhgorod, Ukraine
[2] Vilnius State Univ, Fac Phys, LT-10222 Vilnius, Lithuania
[3] Mersin Univ, TR-33342 Ciftlik Koy, Mersin, Turkey
来源：
LITHUANIAN JOURNAL OF PHYSICS | 2009年 / 49卷 / 02期
关键词：
superionic mixed crystals; optical absorption edge; Urbach rule; phase transitions; AMORPHOUS-SILICON; CU6PS5X X; BR; CL; CONDUCTORS; DISORDER; RULE;
D O I：
10.3952/lithjphys.49205
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
Isoabsorption and spectral temperature studies of absorption edge of Cu6PS5I0.8Cl0.2 superionic mixed crystals are performed. Phase transition temperatures are determined and the transitions are identified. The optical absorption edge shape is studied in the temperature range 77-320 K, the parameters of electron-phonon interaction, resulting in the Urbach behaviour of the optical absorption edge, are determined, temperature dependences of the optical pseudogap and Urbach energy are obtained.
引用
收藏
页码：209 / 214
页数：6
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